Skiving machine



Nov. 29, 1949 L. P. DOMINIAK SKIVING MACHINE 2 Sheets-Sheet 1 Filed Dec. 10, 1947 in ialz WWWJOJ Ioai.s .P. Dom

Nov. 29, 1949 L. P. DOMINIAK SKIVING MACHINE 2 Sheets-Sheet 2 Filed Dec. 10, 19.47

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gwuwwtoo Louis B Dominica's i aw W Patented Nov. 29, 1949 UNITED STAT B gATENT 1 OFFICE smvmonaonima Louis P. Dominiak, Grand Rapids, Mich.

Application December 1 I 5 Claims.

1 The present invention relates to'skiving machines and more particularly to a machine-for skiving worn shoe soles preparatory to re-soling the shoes.

The primary objects of' the invention are to provide an improved skiving machine by means of which the worn body of a shoe sole may be quickly and neatly severed from the portion of said sole in one operation and in such a manner that the shank portion of the sole-remaining on the shoe is beveled to fit a similar bevel on areplacement shoe sole; and to provide such a skiving machine which is convenient and efiicient in operation, sturdy infconstruction, and reasonably economical in manufacture. f; 4

An illustrative embodiment of the invention is shown in the accompanying drawings, wherein:

Figure 1 is a perspective view of my new skiving machine and showing'a worn shoe in position for the skiving operation; Figure 2 is a fragmentary perspective view of the same with portions of the machine -being broken away to reveal the parts beyond;

' Figure 3 is a perspective'view of a sh the first out has been made; I v v Figure 4 is a perspectiveview of the shoe after the'second out has been made; 1 Figure 5 is an enlarged side elevational view of the machine and the upper portion only *of'the supporting standard therefor, certain partsgbeing shown in vertical section taken on line 5 -5 of Figure 6; and Figure 6 is a bottom plan view of the machine with the supporting standard therefor shown in horizontal section taken on line 6-6 of Figure 5. Referring now in detail to these drawings wherein like parts are designated by the same numerals in the several views, the skiving machine there shown is mounted on a supporting standard which comprises a base portion In, an upright portion ll, an upper horizontal portion l2, and a housing i3 depending from the horizontal portion I2. The portions Ill, H and 120i the standard are preferably an integral metal casting, and the housing I3 is preferably a separate metal casting secured to the horizontal portion l2 of the standard as by means of machine screws l4. The housing l3 comprises abody l5 and a forwardly projecting arm [6. v

r A table is mounted on the underside of the housing I3 for supporting the worn sole ll of a shoe l8 to be skived. The table as here shown comprises two sections, a section l9 secured as by after 0, 1 947, SerialNo. 790,905

outer end portion of the housings arm It. This 15 of the housing, and a'section 2| secured as by machine screws 22 to the underside of the arm I6 of the housing.

. A manually operable horizontal crankshaft 23 having'a crank handle 24 is rotatably journalled in the body l5 of the housing l3, and has a gear 25jthereon externally of the housing. A second horizontal shaft 26 is journalled in the body l5 of the housing l3 above the table section l9and extends completely therethrough from side to side. The shaft 26,has an external gear 21 mesh-- ing with thejgear. 25' on the crankshaft 23, anda serrated feed roll 28 and gear 29 located within an opening 30 through the housings body 15. I

A third horizontal shaft 3| is journalled in the shaft 3| has mounted thereon spaced serrated feedrolls 32, 33, and a gear 34 and annular guide groove 35' between the feed rolls 32, 33. A cogwheel 36 rotatably mounted on a horizontal spindle 31 secured in the housings arm l6, meshes with the gear 29 on the second shaft 26 and also with the gear 34 on the third shaft 3|. It will be seen that as the crank handle 24 is turned, the train of gears above described will effect simultaneous rotation of the feed rolls 28 and 32, 33 to feed the shoe sole I'I across the table of the machine.

A vertical knife 38 is mounted in the table section 2| between the first feed rolls 32, 33 on the third shaft 3!, said'knife 38 having a depending portion 39 engaging in a slot 40 in the table section 2|, a forwardly-upwardly extending knife edge'4l, and an arcuate forward upper surface 42 extending into the guide groove 35. The knife is thus removably mounted on the table without any fastening means, said knife being maintained in a vertical position by the guide groove 35 and being secured against longitudinal movement during passage of the shoe sole thereby, by the depending portion 39 engaging in the slot 40 of 'the table. e

' 'A skew knife 43 "is-mounted on the machine with its cutting edge beneath the second feed roll 28 by means of a holder 44 pivotally secured to the housings body [5 by means of a machine screw 45 at one side thereof. The other side of the holder 44 isvertically adjustably secured to the housings bodyjl5- by means of a machine screw 46 passing through a vertically elongated slot 41 in the holder and threaded in the housing. Vertical adjustment of this side of the holder 44 and resultant angular adjustment of the holder and the =-skewknife 42 mounted thereon, is

machine screws 20- to the underside of the body effected by means of a manually operable adjust? ment lever 48 mounted on the outer end of a stub shaft 49 journalled in the housing, and a pin 50 on the inner end of the stub shaft 49 engaging in an aperture 5| in the holder 44 imparts raising and lowering movements to the holder during lowering and raising movements respectively of the lever 48. The angle of the skew knife 43 may thus be varied to produce the desired bevel cut, the holder 44 being secured in angularly adjusted position as by means of a detent 52 (see Fig. 5) which springably engages in one or another of a calibrated arcuate series of depressions 53 in the outer face of the housing-"s?- body IS. The skew knife 43 is removably secured to the underside of the holder 44 as by means of machine screws 54, and is secured against l'ongie tudinal movement during passage of the shoe sole l1 thereby, by meansof an L-shaped clip" 55 secured to the holder 44 as by means of a;

Operation After the knives have beenproperly positioned in the machine and the skew knife adjusted to produce the desired bevel, the shoe is prepared for the skiving operation by cutting away the stitching which held the body of the sole to the shoe proper. The shoe is then fed to the machine with the sole resting on the table and with the shoe proper beneath the table. The crank handle 24 is then turned manually (or by means of a motor, not shown) and the sole is fed successively beneath the'firs-t feed rolls 32,. 33 and the second feed roll 28. As' the sole passes beneath the first feed rolls, the'vertical knife 38 makes a vertical cut 51 which severe) the body of the sole from the shank portion 58 thereof as illustrated in Figure 3. The severed body portion of the sole is then shunted downwardly through the slot 40' and thus .disposed of, by means of a block 60 having a bevel Bl at its forward edge which bevel guides the severed portion of the sole through said slot 40. sole passes beneath the second feed roll 28 the skew knife 43 makes the desired. bevel cut 59 in the remaining shank portion 58 of the sole. The severed shank portion of the sole is then shunted upwardly over the bevelled surface 62 of the holder 44 and thus disposed of through the rearof the machine. The shoe is thus, and in one operation, skived. to receive a new sole having a bevel cut complementary to the bevel cut 59 in the shoe sole.

Earlier skiving machines were contrived to sever the body of the shoe sole and to bevel the shank portion thereof with a single out. These have been found unsatisfactory because of the binding which inevitably occurred during this diflicult operation. My invention eliminates any such binding by making first a neat, relatively easy vertical out which facilitates making the subsequent bevel cut, and my machine makes both of these cuts in a single operation. While but one specific embodiment of the invention has been herein shown and described, it will be understood that numerous details of construction may be altered or omitted without departing from the spirit of the invention as the same is defined by the following claims.

I claim:

1. In a skiving machine: a standard; a table on the standard adaptedto support the sole of a shoe to be skived; a manually rotatable shaft When the 4 mounted on the standard; spaced feed rolls mounted on the standard above the table, said feed rolls being geared to said shaft for rotation therewith to feed the shoe sole across the table; a vertical knife mounted on the machine adjacent the first feed roll adapted to sever the body of the shoe sole with a vertical cut; and a skew knife mounted on the machine adjacent the second feed roll adapted to skive a bevel adjacent the vertical cut in the remaining shank portion of the sole;

2. In a skiving machine: a standard; a table on the standard adapted to support the sole of a shoe to be skived; a manually rotatable shaft mounted on the standard; spaced feed rolls mounted on the standard above the table, said feedrolls bein geared to said shaft for rotation therewith 'to'feed the shoe sole across the table; a vertical knife mounted on the machine adjacent the first feed rolladapted to sever the body of theshoe sole with a vertical cut; a skew knife holder mounted on the standard behind the second feed roll and a skew knife removably mount: ed'on the holder with its blade extending be neath said second feed roll and adapted to skive a' bevelin the remaining shank portion of the shoe sole adjacent the vertical cut, said holder having one side thereof. pivotally connected to the standard and the other side thereof 'vertical ly adjustably connected to the standard whereby the angle of the holder and the skew knife is variable; and means for securing the skew knife holder in angularly adjusted position. 3.. In a skiving. machine: a standard; a table on the standard adapted to support the sole of a shoe to be skived; a spaced pair of serrated feed rolls rotatably mounted on the standard above the table; means for simultaneously rotating the feed rolls in the same direction for feeding the shoe sole across the table; a vertical knife mounted on the machine adjacent the first feed roll adapted to sever the body of the shoe sole with a vertical cut; and a skew knife mounted on the machine adjacent the second feed roll adapted to skive a bevel in the remaining shank portion of the sole adjacent the vertical cut. 7 i 4. Ina skiving machine: a standard; a table on the standard adapted to support the sole of a shoe to be skived; a spaced pair of serrated feed rolls rotatably mounted on the standard above the table; means for simultaneously rotating the feed rolls in the same direction for feeding the shoe sole across the table; a vertical knife mounted on the machine adjacent the first feed roll adapted to sever the shoe sole with a verstical cut, said table having a slot therethrough' adjacent said vertical knife through which may pass the: portion of the sole severed by the ver-- tical knife; and a skew knife mounted on the machine adjacent the second feedroll adapted to skive a bevel adjacent the vertical cut.

5." In a skiving machine: 'a. standard; a hori zontal table on the standard adapted to support the sole of a shoe to be skived; a manually rotatable horizontal shaft mounted on the stand ard; a second horizontal shaft mounted on the standard above the table and geared to the first shaft' for. movement therewith; a third hori-' zontal shaft mounted on the standard above the table in horizontallyspaced relation to the sec-' ond shaft,all three of said shafts being parallel; gears on the second and third shafts and an in-s termediate cogwheel meshing with said gears: whereby the-second and third shafts are rotated:

. in-:t:he same direction; afirst serrated feed roll,

mounted on the third shaft adapted to feed the shoe sole in the direction of the second shaft and a second serrated feed roll on the second shaft adapted to feed the shoe sole across the table, said first feed r011 having an annular groove guide therein and said table having a slot therein beneath the groove guide; a vertical knife removably mounted on the table and having portions extending into said table slot and said groove guide respectively to maintain the knife in vertical position adjacent the first feed roll during passage of the shoe sole thereby; a skew knife holder mounted on the standard behind the second feed roll and a skew knife removably mounted on the holder with its blade extending beneath said second feed r011, said holder having one side thereof pivotally connected to the standard and the other side thereof vertically adjustably connected to the standard whereby the angle of the holder and the skew knife is variable; and means for securing the skew knife holder in angularly adjusted position.

LOUIS P. DOMINIAK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

